Effects of beetroot juice on endurance exercise performance/Efeitos do suco de beterraba na performance de exercicios de endurance

• Published in: Revista brasileira de nutrição esportiva 2014-09, Vol.8 (47), p.322
• Main Authors: Pereira, Maykeel de Avila Vieira, Tavares, Marcelo Rodrigo, Silva, Roberta Bessa Veloso
• Format: Article
• Language: Portuguese
• Subjects: Analysis; Blood sugar; Exercise; Fruit juices; Heart beat; Nitric oxide
• ISSN: 1981-9927; 1981-9927

The main factors that limit performance during endurance exercise are: the reduction of carbohydrate stores, the fall in blood glucose, dehydration and lack of oxygen. The beetroot juice supplementation reduces the O2 cost of submaximal exercise and enhances tolerance to high-intensity exercise. This study aimed to investigate the effects of beetroot juice on endurance exercise performance, through the exhaustion test on the bicycle ergometer. The study in which 10 men, healthy and do not have similarity with the exercise test received 500 ml per day of organic beetroot juice (100g 400ml water) for seven consecutive days before completing a series of tests. On another occasion, they were given a placebo of blackcurrant for seven consecutive days before the same tests. It was reported after the test performed increased 98 seconds (P = 0.0375) compared to placebo ingestion, revealed no significant difference between the charges for the group of individuals who ingested beets when compared to the group of individuals who ingested placebo (P = 0.1964) and in relation to heart rate after the heating step, the groups beet and control, can be considered equal (P = 0.9091). Supplementation improved NO3 time of task failure. Key words: Beetroot Juice. Nitric Oxide. Endurance Exercises Os principais fatores que limitam o desempenho durante o exercicio de endurance sao: a diminuicao dos estoques de carboidratos, a queda da glicemia, desidratacao e ausencia de oxigenio. A suplementacao de suco de beterraba reduz o custo de O2 de exercicio submaximo e melhora a tolerancia ao exercicio de alta intensidade. Este estudo teve como objetivo verificar os efeitos do suco de beterraba na performance de exercicios de endurance, atraves do teste de exaustao na bicicleta ergometrica. Participaram do estudo onde 10 homens, higidos e que nao tenham similaridade com o teste ergometrico receberam 500 ml por dia de suco de beterraba organica ([+ or -]100g + 400ml agua), durante sete dias consecutivos antes de completar uma serie de testes. Em outra ocasiao, eles receberam um placebo de groselha durante sete dias consecutivos antes de os mesmos testes. Relatou-se depois do teste realizado um aumento de 98 segundos (P = 0,0375) em relacao a ingestao de placebo, revelou que nao houve diferenca significativa entre as cargas para o grupo de individuos que ingeriu beterraba quando comparado ao grupo de individuos que ingeriu placebo (P = 0,1964) e em relacao a frequencia cardiaca depois da